Adding-machine.



W. J. PASINSKI. ADDING MACHINE. APPLIUATION FILED JULY s, 1911.`

Patented Apr. 16, 1912.

5 SHEETS-SHEET 1.

Aya.

NNN mm N SNN) W. J. PASINSKI.

ADDING lkiIACHlrNEl APPLIUATION FILED' JULY 5, 1911.

Patented Apr. 16, 1912.

5 SHEETS-SHEET 2.

W. J, PASINSK.

y ADDING MACHINE. APPLIUATION FILED JULY5, 1911,

1,023,168.' Patented Apr.16,1912

Q1 5 SHBETS-SHEET 3.

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lili N VMC Y W. J. PASINSKI.

ADDING MACHINE. APPLIUATION FILED JULY, 1911,

1,023, 1 68. Patented Apr. 16, llr

5 SHEETEPSHEET 4.

I UNITED sTATEs PATENT oEEIoE.

WALTER J'. PAVSINSKI, 0F DETROIT, MICHIGAN, ASSIGNOR TO BURROUGHS ADDING MACHINE COMPANY, OF DETRDIT, MICHIGAN, A CORPORATION F MICHIGAN.

ADDING-MACHINE.

Specification of Letters .Patent. l Patented Apr. 16, 1912.

Application tiled July 5, 1911. Serial INo. 636,878.

anism of an adding machine and is pri-- marilyjintended for that type of machine in lwhich there are independent actuators for adding wheels of different orders or denominations, which actuators are individually operated by manipulative means such as series of depressible keys.

One object of the present invention is to prevent overthrow of a registering wheel to which carrying movement being imparted, by reason of the actuator for that wheel being held in operatedv or abnormal position while the actuator of next lower denomination is operated to rotate its own regr istering wheel to such extent as to cause carrying movementof the higher order wheel.

'In the particular machine whicliwill hereinafter'be specifically described,ieach actuatorr is in the form'of a lever having a rack sector in mesh vwith pinions and the latter areA connected through ratchet and pawl mechanism with gears normally locked but adapted to be unlocked upon the actuators being moved from normal. It is this unlocking. thatwmakes possible overthrow of the higher order wheel if its actuator is held in abnormal position while the next lower order actuator is operated. By the present invention provision is made for again locking the higher order gear when .its actua-tor has been fully operated. I should yperhaps add atl this point that though the actuator for the higher order wheel is adapted to turn that wheel through the medium of the gear, the carrying movement, in the particular machine hereinafter specifically de-v scribed, ytakes place independently of any movement of said gear, which does not mesh with the registering wheel but is connected thereto through planetary gearing.

Another object ofthe present invention is to provide an improved form of escapement mechanism whichwvill reduce to the minimum that movement of a higher order wheel which accompanies or is caused by the preliminary or initial shift-ing of an escapement detent, so that should such shifting occur prematurely, as it may, by reason of momentum, numerals displaced by the lregistering wheels will not be thrown noticeably out of alinement. I aim to accomplish this without having recourse to detent shifting cam projections confined in extent to an are corresponding with that of the registering wheel between the 9 and O inscriptions thereon. By so doing I obviate hard action and excessive wear incidental to the necessarily abrupt character of cam projection when confined in extent to the arc above mentioned. In my improved escape-- ment mechanism I furthermore seek to obviate any tendency of the detent to stick in its shifted position by reason of friction between it and the escapement disk when the carrying spring, which is superior to the detent spring, has been released by the pre--` liminary or initial detent shift. In this connection I arrange for an edge to edge engagement at such'an angle to the intersecting radius of the detent that this engagement of itself tends to return the detent member to normal.

In the drawings which accompany and form part of this specification Figure 1 represents, partly in section and partly in side elevation,l a complete adding machine in which my improvements are incorporated, all the parts being at normal; Fig. 2 a view somewhat similar to the lefthand phrtion of Fig. l on a larger scale and taken on a section line further over or just to the right ofa higher order train of mechanism than appears in Fig. 1, this view further differing from Fig. l in showing a changed relation of parts due to depression of the l key of the series; Fig. 3 similarly illustrates some of the parts appearing in Fig. "2.,

though here a diiferent relative positioning is illustrated as due to depression of the 4f. key of the series; Fig. 4t is a partial vertical cross-section and a partial front elevation of the for ward part of the machine, the sec-` t-ion being substantially on a line 4--4 of Fig. l and the view being curtailed laterally; Fig. 5 is a plan view and horizontal section taken substantially on the line 5-5 of Fig. l and limited to a train of mechanism associated with one rder or denominational place; Fig. 6 is a Vvertical section taken on the line 6-6 of Fig. 4, and shows the escapement mechanism atnormal; Fig. 7

o: Ln.

illustrates the corresponding position of the associated lower order wheel which is represented as exhibiting its cipher, this view being somewhatdiagrannnatic and taken on a section line such as that designated 7 7 in el tiiough the registering` wheel represented would in tact be that to the right and not included in Fig. al; Figs. 8 and 9 are views corresponding with Tfigs. (i and i', but

- with escapement members in ditt'erent vrelative positions, the lower order wheel being represented as registering 9% Fig. l0 is sectional view taken on the line iOwlO of t; and Figs. il and i2 are views on the ame order as lJigs. t3 and 8, illustrating ditiercnt conditions to demonstrate the advantages of my improved forni ot escape ment.

Before proceeding to point out the particulars of the present invention l shall first describe considerable mechanism which is not of my invention but represents the spe#A shown in application ot Allen A. Horton,

tiled April i8, 191i, Serial llo. 621,872.

The machine is inclosed in a suitable casing A, preferably a casting comprising base and sides; and the mechanism is supported by a suitable' framework comprising side pieces B with feet resting upon and secured` to bosses on the bottoni ot' said casting, sound deadennnr pads b being pretcrabl y interposed. The framework also comprises intermediate uprights C to certain of which are secured angle plates C. Key stems D slide through a top plate E and through said angle plates and are upheld by spiral springs (Z all as shown in Figs. l and 2. Also they are slotted to embrace guiding cross rods o held by the frame side pieces and uprights. yEhe keys are arranged in parallel rows, nine in row, as usual, and their surmounting tnger pieces d inscribed from l at the front to 9. at the back and it desired with complementary numerals tor subtraction purposes. There is a long lever l" for cach row ot' keys, these levers being pivoted at the extreme rear ot the machine on a traine cr -rod 7" and extending along the keys in a iut forward of them where e` ch lever h integral with it a incntal rack i Hain springs it: connect depending arms ot the levers' with overhead portions ot' they tramewori; and the lcvcrs are adapted to ne torce-d down againstl the str s ot these springs in varying degree by depression ot the kcvs. and -upon release of thc l s the springs li"-y cxert their power to drive gearing hereinafter described which in mesh with the segments F. Lngs Z2 stems extend over to contact with the same at om 'f ir pivots to diis there is a possibility that in rapid and hard operation, especially with the higher denomination keys in action, extreme vibration of parts might cause movement o'I' the acting end of the lever beyond that measured by the key, special means are employed to guard against overthrow ot' the adding wheels by any such excessive motion ot' the levers. It. is obvious that this can be accomplished by positively stopping the forward ends of the levers directly below the segmental racks, and in the present instance means are provided for doing this in a very simple and etilcctive way. As the devices employed in this connection for each row of keys are the same, a description ot' one complete set will sutiice.

Referring first to Fig. l, a bar G is arranged below the key stems suspended by a pair of radius links G and G2 journalcd on cross rods at the top of theinachine trame, and this bar is formed along its upper edge with series ot cam projections gl and y', tnere being one such projection for each key, andthe stems of the keys being equipped with roller studs cl3 to act upon them. Outer inclined edges of a pair of these projections f/ and g extend on opposite angles for cooperation with the studs respectively on adjacent keys so that an ott number key thrusts the barG one way (forward), and an even number key thrusts the bar the opposite way (rearward). The forward radius link G2 extends downward beyond the bar G and is bent laterally to form a foot (/2 to cooperate with stop shoulders on the lever F. The latter is 'formed at the torward end, immediately back of the gear segment F", with a widened open-center portion F2 within which the toot g2 projects. The inner confronting edges ot this portion ot the lever have ratchet formations providing two series of downwardly directed shoulders, the shoulders at one side being staggered with reference to the shoulders at the other side and there being a terminal shoulder at the upper end at each side and in similar relation. The toot gt normally seats in a square notch gt centrally located between inclined edges below thc lowermost shoulders ofi the two series, and said vtoot has' beveled edgesI totaciltate its so seating.

The above described structure comprising swinging bar G, and radins links G and G2, is normally centralized by scissors jaws i(/5 pivotcd on'one o't` the cross-rods (l and engaging opposite side ot a stud y which pro jects from the bar G (Fig. l), said jawsl being drawn. together by a` connecting spring (/3 and having angular extensions or arms gl engaging others of the cross-rods al Normally the condition is as illustrated in Fig. l, the foot g2 being out of line with all ot the stop shoulders7 and the condition continues during the first part of the descent of a key, or until the roller stud cl3 of a key sides of the pinions and overlapping the sectors, and the disks /zf' have peripheral lianges `formed as ratchet wheels II of the internal variety, see Figs. '2 and 4. rI`here is loosely mounted upon the journal rod o adjacent each olf the'pinions I'I a sleeve I which is enlarged into a hub-like portion within the internal ratchet, and upon said sleeve againstI a shoulder thereof is secured a gear wheel Icarrying a pawl I2 pivotally mounted upon one side thereof within the said ratchet and pressed into engagement therewith by a spring yz' seating in a socket of the hub-like portion of the sleeve as shown in It ig. 2. Obviously this arrangement provides tor turning of the pinion H by downward movement of the sector without turning the gear-wheel I, whereas when the sector returns. said gear-wheel will be turned with the pinion and ratchet. To prevent overthrow' in the latter operation, there is mounted upon the sleeve l, a hintern wheel I3, the saine being here shown as equipped with studs or pins t, engaging holes in the u gear-wheel I', Fig. i, whereby to rotatively connect the lantern wheel, gear and sleeve. Stop pawls are loosely mounted upon another journal rod as, there being one such pawl tor each lantern wheel I3. Pawls desio'- nated J, comprising all except the one associated with the units section or bank of the machine, are connected by springs with arms J also loose on cross rod 0.3, and which extend alongside the associated sectors It" respectively over studs 7 projecting later- 'ally from the lower portions 'of the sectors, as shown in Figs. l and 2; so that normally such p awls are forced upwardly into engagement wit-h pins ot the lantern wheels as shown in Fig. l. Springs j tend to withdraw these pawls from engagement with said wheels so that upon the lowering otiauy sector the associated pawl unlocks the gearwheel I', the gravity of the pawsl and arm J also serving to bring this about', though preterahljv not relied upon. lt will thus he seen Vthat the gear wheels I are normally locked h v these pawls against turningl in the direction in which the sectors turn them through. the ratchet and pawl mechanism above described, and it will also be seen that the driving ot these pawls into engagement with the lantern wheels by the sectors in arriving at their normal position will etl'ectually prevent any over-rotation otl the gears. lpward movement ot' the sectors is here shown as limited by their abutment against the journal rod (It on which the stop members (l2 are mounted, and of course by the time the sectors strike this rod they will have driven the pawls into etl'ective position. It will be understood, ot course, that the springs j are superior to the springs y", so that when the studs f drive against the arms J the pawls' J will more as though yon which are journaled pinions M".

integral with the arms (the spring-studs je on the arms J overlying the upper edges of the pawls J) except, ot' course, that the pawls would yield if their ends happened to encounter the passing pins of the lantern wheels. This, however, is not the real oceasion for the yielding connection between the pawls and the arms, which has to do primai-ily with the resetting or turning to zero of the number wheels, presently to be described, which are actuated by the gears I. In the case of the units setof devices, the stop pawl is not separate from its actuating arn1,l;nita one-piece structure J2 is employed as shown in Fig. l, such olie-piece structure having a tooth or projection to engage the lantern wheel and a rearward extension to engage the sector' stud f. In so far as concerns the locking of the gear-wheel, this pawl J2 functions the same as the other pawls J, though as will be hereinafter described it has a special function to perform in connection with the resetting or turning to zero.

The gear wheels I are in constant engagement with vthe members respectively oi" an other set of gear wheels L which are secured respectively to hubs m, (Fig. 4;) journaled upon sleeves n which are in turn journaled upon a cross-rod a extending from side to sident the machine. There are also Secured to said hubs'm, arms m carrying studs m These pinioiis protrude through oritices in the gears Ii and as planet gears they engage sun gears M2 upon the rod (LG. All the sun gears except that with which the planet gear M of the units order engages, are rotatable upon the rod a6 for transfer oi tens carrying purposes, it being' of course obvious that there is no carrying to the units wheel. The planet gears M are of double width, and besides meshing with the sun gears M2, mesh with internal gears N which form part of the number wheels N', whose webs N are fastened to the aforesaid sleeves a respectively. There are formed upon the .latter outside these webs, pinions N3 which mesh with gear wheels O on journals in bearings set in the division plates C, such journals carrying on the other sides of said plates, pinions O in mesh with the internal gears O2. These internal gears have their webs secured to hubs O3 journaled upon sleeves m.4 integral with the hubs of the sun gears M2. Springs I are coiled around the hubs 03 there being one spring for each hub, and

each spring being connected at one end to a stud 0 projecting from the side of a disk O4 also secured to the hub O3. The said disk 'is formed with a slot o in the arc of a circle, see Figs. G and 8, and through such slot projects a` stud p from the side of another disk I3 which is secured to the hub of the sun gear M2, it being understood that there is one of these disks secured to each sun wheel except that belonging to the units section of the'inachine, which always remains fixed.

It will be obvious that the turning of any gear wheel L by a sector-actuated gearwlieel I willv result in turning of the associated number wheel N through the medium of the planetgear M as the latter traverses the sun gear h 2, being at the same time engaged with the internal gear N. Naturally the ratio of movement is made such as to turn the number wheel distances 'according with the number ofr the key depressed. In so far as the units wheel is concerned this is the only turning thereof which need be considered, except that done in a zero-setting operation, but of course as to higher order wheels they must receive one. step movements to register tens carried over from lower wheels. This is done by the springs P and timed by an escapeinent mechanism which will be later described.

Passing now to the matter of re-settiug the number wheels to `Zero, this is done by turning all of the wheels forward to the (9) position and in the same operation pulling the units sector down' one step so that when released it will turn the units wheel to zero and the other wheels will be turned to zero through the carrying action that ensues. To advance the wheels to the 9 i position the internal gears O2 are laid hold of, it being obvious that by turning them the iiunibei' wheels will be rotated. Each of said internal gears carries projecting laterally from its web tive equi-distant studs or pins` o and one or another of these is adapted to be acted upoii by a hook ll. which normally stands forward out of the path of said studs, as shown iii Fig. l. lt is so held by a cross-rod o7 against the stress of a spring lt connecting a lower portion of the hook with cross rod of'.

A rock. shaft S journaled in Isuitable bearings at the front part of the machine earries a, series of arms S extending alongside the lower portions of the hooks ll respectively, and equipped with studs S* engaging longitiiidiiial slots i" in the hooks. Normally the springs l. tend to ioehr the hooks upon said studs, which are-then in the upper ends of said slots, butsiich motion of the hooks is resisted by the cross rod a? which is tlieu engaging ,seats or sockets iii the rear edges of the hooks as illustrated iii Fig. l. lVlien the arms to are swung downward b v the rocking of the shaft. t5 in the direction of the arrow the vfirst ei'l'eet is to turn the hooks lil` to a limited extent, the cross-iod al supplying fuiera. rlfhereby the hooks are brought into position at their upper ends to engage pins or studs of. Continued downward swinging of the arms S brings their l studs 5F'- to the lower ends of the slots r, whereupon the hooks are drawn downward.

stretching the springs R", and will pick up the gears O2, by engagement with their studs or pins o, at varying points according to what the number wheels are registering at the time. The relation between these parts is such that the full downward movement of the hooks, produced by downward swinging ofl the arm S', will rotate the number wheels forward to the 9 position. The formation of the rear edges of the hook members above the seats or sockets which normally engage the cross rod al is such asto accommodate the are movement of the portions of the hooks engaged with the studs or pins o, the said edges having a reverse curvature in the arc of a circle. ln order to prevent o\'ertlirow of the wheels in the zero setting operation, e., movement beyond the 9. position, a pair of levers T of bell crank forni a re loosely mounted upon the cross rod as. T he rearwardly extending arms of these levers carry a cross har or plate T having upstanding lugs t, one for each wheel and adapted to be moved into ythe paths of pins or studs n projecting from the webs N 2 of the latter and so located thereon that when said wheels exhibit Qs the studs have arrived at the rear sides of these lugs. In the present construction the lugs are not brought into such position until the hooks R have descended some distance, though said lugs are brought to effective position in ample time to prevent the possibility of overthrow. Suitable, provision is made for so timing the action of these stop lugs, as follows: The depending arms of the bell-crank levers T are formed with longitudinal slots, the upper portions Z2 of which are normally coi :entric with. the shaft S, but lower portions t3 of whichare eccentric thereto or of cam formation. 'lhe studs S2 of adjacent arms S eX-' tend through these slots and traverse the concentric portions t2 thereof during the greater portion of the downward swing of the arms b", but as these arms coii'iplete their downward increment, the studs act upon the eccentric or cam portions t3 of the slots and thereby rock the levers and, project the lugs't into the paths of the number wheel studs n". i s

lt. is of course necessary that the wheels be unlocked before the hooks lt start down ward. To this end the locking pawls J have downwarihextensions with curved rear edges normally eccentric to the shaft S, and the arms` S have studs or pins s adapted, during the first part of the downward movement of said arms, to act upon the corners at the upper ends of said edges and disengage the, pawls from the lantern wheels l, then holding said pawls displaced, during the further downward movement of the arms, by reason of the studs traversing the curved edges then concentric with the shaft S. As to all but the units pawl this does not have any elect upon. the sectors ll",'as the springs y' stretch, being interior to the sector springs F2. However, it will be remembered that the units locking pawl J2 is integral with the rearwardly extending arm which engages the sector stud j'. llence when the pawl is rocked to disengage it from the lantern wheel the sector will be forced downward. The relation of parts is such that the downward movementot the sector thus produced is eactly equal to the movement produced by depression of the l key. Hence when the shaft S is released and restores tolnormal the units sector will turn its wheel one step forward or from 9 to Zero, and a carrying action will ensue all the way across the series of wheels so that all come to Zero position. arm S which acts to turn the units wheel carries the stud s which unlocks the tens train of gears (owing to the lateral relationship of parts as shown in Fig. 4, the units gear O2 being spaced considerably leftward of the units lantern wheel 13 and the studs so projecting leftward, as the ma-A chine is viewed from the front), a short additional arm S3 is secured on the rock shaft S near its right hand end to operate the pawl J2, the latter having a depending branch jl like those of the pawls J, and the said short arm having a stud 88 to act thereon. Actuation of the rock shaft S is elected by a hand lever W arranged at the right hand side of the machine, as shown in Fig. 1, and screwed to rotative engagementwith a short rock shaft which carries a crank arm `W2 operatively connected to a .similar crank arm S4 secured to the rock shaft S. The connection is preferably a yielding one in the interest of safeguarding the machine against violent usage and of protection in the event. of a hitch in the operation. Thus a link member W't, pivoted to the crank arm lV, is longitudinally slotted at its other end to embrace a stud ST on the crank arm S4,

andSPfDgS X connect. a cross head W57 at the slotted end of the link NVS-with a cross head S5 at the similarly slotted end of a link member SC, which at its forward end is pivoted on the stud S and at 'its rear end embraces the pivot stud 'w on the crank arm Vim.' A spring Y attached to the cross head S5 and to the frame work restores the rock shaft S after it has been rocked one way by the handle W.

Any suitable means may be employed for limiting the movement of the handle. ln the present instance, the stud, w, is extended outward to abut the ends of arms B2 -which spring from the lower bar of the right side 'trame piece B.

All oi the above detailed description relates to the particular machine to which l have applied my improvements. l shall now describe the improvements themselves, set into the plane ut the disk l" As the dog' r/ watch normally 1i messes first taking up the cscapement mechanism which controls the springs P, and 'the construction is the same for each higher order wheel a. description ot' one set of escapement devices will sutlice.

The disk O"i which has already been described has geared to the lower order wheel and progressively tui'ned thereby, is divided into live equal peripheral sections since the ratio between the pinion M3 on the-lower order wheel and the internal gear G ich that av complete rotation ot' the number wheel turns the internal gear and disk @i oue-litth of a rotation. These subdivisions ot' the periphery of said disk are in the form of gradual cams 05 which terminate in radial shoulders o. The sun gear disk P correspondingly has tive eqi'iai distant pe ripheral projections or teeth p5, radial on one side to tace oppositely to the cams and inclined on the other sides but not brought to a point, there being outer edges ot' appreciable extent concentric with the disk and llush with the outermost or highest portions ot' the cams 0". For the purposes ot the present invention an esca ement pallet is employed comprising two independently lovable members spring-held together, one et which members normally engages and restrains an escapement disk P and the other ot which rides upon the periphery ot the. cam disk 0" and is adapted to engage and momentarily restrain the escapemeut disk P. The two members are mounted side by side upon a frame crossrod all so as to turn thereon in unison or independentl)Y i: each other, and the firstmentioned member is in the Vtorni et au arm Qi having at its forward end an integral es with its one el". the of the disk straight. edge the radi: teeth or peripheral projection. l as shown in b, therel restraining said disk while the :spring 'l tcnsioned'. Said arm Q hasl a rearwardly. extending portion underlying a sind q set in an arm ot' the other pallet member Q, This member con'iprises an urn extending alongside the arm Q and formed with a toot f/ which is pressed iigainst the periphery ot the cam disk O by a spring y connecting the stud y* toa portion ot the framework. 'the tout is formed to cles/elf.,y enig-ofc the periphery of the cam disk and to spring' inward against the lowest oiximiermost portion of a section or subdivision therrot the moment that the highest or outermost point ol the next or preceding cam fr passes the innei edge ber Q has a curved or liook-L-'lmped sion t'ormed with a terminal di llt f unimi wi n t) 1 u v Mening toom or prop-ct on being; the ncxt mowi im i but (me. in mii/mme ne Sizniim tomb (in Hence the fing (Lf Wiii il@ minimi ontwniiiy und :is the dini; 0^* parinis @if movsniizn coi'ii'esimndinp; wiii limit of iii@ zissnfjfif'zieii nmnbei: Wheei from S to 07" Suid nog viii (iissengfiig: funn iin; tomb and the' spring P having been 'rnixniiine pnt under ieisnnn t e dini; Y mii he iinrnifai siigghy nnniimnxi @ng-uws the s night 'Mime (if the Lntmi in Fig'. 5S, Hw iisivmenione moth passing; innini' tin Then as; the move* `5k U* proznii i'i am 05 passes by )Une fooi; (I the Spring g3 asin and iiificngngoa the (ing Q2 from tim moin of 'die (Risk, nf'iwrnpon he intim pm inks ni 'the imizinus 0i im unifying; mm'mnent :ns monni'esi by aimingnins in@ ing y" wixinii 'iiies down @if of iii@ mY-ii nime@ 1s the disk icsnnws its i ni.

spying;- {w connects die mn Q with a Qniinyifing Gin winni bciwsvn iii@ ting y :uni the; poi'ig'i mr mi: the fiik i,

im) iinifependniiy movable members inn* mi ai une iningji'ni member isf iiniii graduali :uns w.

J Snbdiwinimn m in@ fiisi: G?. The diffivnity about employing.such gizninai. Cams :itnin nmnwnnin niiiiiieii to siisngnggc iii@ Dro nni'iuii", is im inwinnen Wiwn iin, iower order wiimi if; winning funn 7 7 in i 01* cau-y iii@ on''h ni iii@ esnpelncnt Whcci past fiile, imijiing dog s@ iim'i when further inining mi {in} anni disk ensinnn ami ib@ high point (nf :imni Hiervon passes by iii@ 'fmt of tine pziiie'g iii@ ini er mny iseuvm its nm" inni pnsii'inn freeing; im @Smpemcni disk fm* cm'npim'inn 01S iin unifying inovomcni. innsn'nnzn :in die ionii mi iii@ f sscnpemen; wheei n1- iiisii unisi' inwn nppremibio pe- L'iniwi'; inviten? in gine in' fi.\ ni weaning qnaii'sies, iii/:5 nim'mnon of nL- dink in mi that onans winni-im snfiiviont to such @ases is ino gromt fo i x'vscivo ih@ niineincn' of nnn'iimn on 'iiofi'ngistm'ing wheels. A".ifhu there "fe not (ifipznnnmit ni" the nulic' nnii in@ i'ini'ibci' wiwei is moving from S" i@ O" Hi@ ,neiiniinzuy m in ii: i nime nient of HieiiSk iS insmniy followed by the iii/nii nim'mnon, and of comme in@ vxieni uf iii@ iniizii movmnmif; in Huch *asu is iininnl'ccizi. it is in use of pieinnln'u (lispncoinnnt of the gmiint. by lnmnoinnxn n'iwn iced npnn by :i (anni extending iiwnngh :L zjrzxoi' fn'c inzn imt' n1n.-;pnnfiing with the me of ixe snnnbei n'lwvi ifr'mn "i0 0, that "he iiijiivniiy :ninna 'nlsy if ih@ lower Gil-(iov whe/ci was oniy nmvingf to ille 9 posiiinn und the higher mint wliwi stnmi ni, L 3 anni there shnnni im. his prom inve, iispinwnwni iu'nngh ninnwninm, the wsniinnt nxovmncnt (si: im iiiglim' (mier wheei wnniii Lrinfhy pzuiiziiiy in View the ninnmai "ai" {hoi-cnn :1mi in@ 'wheel would im i'if' nnnringwith pznt; rif Hieninnerni i i3 showing :uni inni, nf in@ nnnwmi 4, which would (iiwinndy im vunimiimmbie. (if mirato ii inc (mn is, Coni/ined in ih@ S" to .0 i :irc this mnnn: www', inn' lin: gizninni :nin much in iw desired in Hin iniiicsln nk' Wearing; quaiiins anni mme gyif notion. "Vilczibiwe eiezriiwd in'iprncni0n providing :i pniiet mini@ of mi@ indenninivniiy' ninvniiic memim 'peiiniin of thv Qnipioyl'ncni nf ihn gradual min inifznirle it is nui @snonini finit the ii'ciiniinm f 1* iniizii innwn'wnl' n? the nim'emnt Uf time (ink ii n; inifnn pif/nw. 'il iiinnifnos iin: confini w inni iid' nwmf inl nuweng'inig in@ i and Mixing that the spring Q5 restores the member Q to its normal relation with the member Q, moving the dog g into the path of the next tooth of the escapement dislr.

The advantage of the )articular disposition of the dog ff hereinhefore pointed out is that an edge to edge engagement between the same and the tooth of the escapement disk ishad, which extends at an acute angle to the intersecting radius of the pallet. It has been found that where such engagement is had in a line substantially at right angles to such radius the direct thrust toward the pivot of the pallet under stress of the carrying spring such as that designated P in the present instance, causes friction sometimes sutlicient to malte the pallet stick, its own spring being inferior to the carrying spring. It will be noted that the edge to edge engagement atan acute angle to the radius will have the opposite effect, z'. c. theicarrying spring Pfwill assist in shifting the pallet back to normal, since the edge of the escapement disk tooth will thrust against the dog q in a direction to swing the pallet hack to normal with a camming action.

Referring next to the other improvement hereinbefore mentioned, to-wit, provisions for preventing overthrow of the higher order wheel in a carrying operation with a key of .the higher order held down, I here utilize the overthrow preventing system comprising the har Gr and the links G and l2. It will sullice to describe the arrangement for a single order or denominational place, as the construction is the saine for each order.

leferring to Figs. Q and 8, reference let,- ter K designates a pawl which engages the lantern wheel l. to prevent backward turning` of the same and the gear l, said pawl being` hung upon a frame cross-rod n.5 and drawn downwardly by a spring For the purposes of my invention l modify the construction of such a pawl so that it may serve also to prevent 'forward turning of the gear. lt will he umlerstood that this gear must remain stationary when the carrying move'- ment of the connected number wheel is had,

' except ot' com-.se il the wheel is heilig individually advanced hy its own actuator. ow since the depression of that actuator unlocks the gear as het'ore described, if the actuator is held down by continued depression of one of the amount keys while the next lower actuator is repeatedly operated, or operated snllicieutly to cause transferring or carrying to the higher wheel, it will he seen that an overthrow might occur with the gear-Al unlocked. Therefore the pawl K formed with a rearward extension' K andraised shoulders and ZF at opposite ends of a depression .13 in the upper side of said extension. The betere-described stonnaenre member G3 of which carries a stud g normally standing over the depression 7a3 as illustrated in dotted lines in Fig. l. lt will he recalled that as a key reaches the end of its movement the stop member G? is swung either forward or haelt to engage its foot rfi with one of the stop shoulders of the actuator. This movement is taken advantage of' here to block the pawl K and prevent an overthrow in carrying such as might occur in the manner above mentioned. lf one of the odd keys depressed the forward swinging of the yoke of which the stop member (l2 forms a part will carry the stud ,r/S over the shoulder la as illustrated in Fig. 2. It an even key is depressed the rearward swinging of the yoke will carrythe studgs over the shoulder k2 as shown in Fig. 3. ln either case the pawl K will be hloelted so as to prevent forward turning of the lantern wheel lg. This obviously will prevent overthrow of the registering wheel. It will he understood, of course, that when the depressed key is released and hegins to rise the spring g3, Fig. l, instantly restores the yoke to its normal position so that the stud g5 moves over the depression 7c3 and permits the operation of the gearing hy the actuator' for the purposes of registration in that order or ilenominational place, as described at'the outset.

that l claim is:

l. The combination with adding wheels relatively arranged for progressive registrations thereon; of carrying mechanism comprising a cam disk rotatively. connected with a lower denomination wheel, an escapo ment disk rotativel y connected with a higher denomination wheel, a spring applied to the latter disk and tensioned by the lower denomination wheel, and a pallet composed of relatively movable. members one of which engages the cam dislt and the escapement dislrand the other of which engages only the escapement disk.

2. The combination with adding wheels relatively arranged for progressive registra tions thereon; of carrying mechanism coinprising a cam disk rotatively connected with a lower denomination wheel, an escapement disk rotatively connected with a higher denomination wheel, Aa spring applied to the latter disk aud tensioned by the lower denomination wheel,- and a pallet composed of relatively movablel members one. of which engages the cam disk and the escapement disk and the other of which engages only the escapement disk; the two members heing interengaged for movement as one by the cam disk.

25. IThe comliination with adding ,wheels relativelyarranged for progressive registrations thereon; of carrying mechanism comv -ber G2 is ftnmed as parto'ffaiyolte, the other alower denomination wheel, an escapement non'iiiiation wheel, and a pallet composed of relatively movable members one of which the cam disk and the escapement disk and the other ot which enga-ges only the esczipenient disk, the two members being imei-engaged for movement as one by thecam disks and a spring being applied to the tirst mentioned pallet member in opposition to the cam disk.

4f. The combination with adding wheels relatively arranged for progressive registrations thereon, ot' carrying mechanism comprising a cam disk rotatively connected with a lo'wer denomination wheel, an escapenient disk rotatively connected with a higher denomination wheel,a spring applied to th'e latter disk and tensioned by the lower denomination wheel, a'nd a pallet Composed of relatively movable members one of which engages the cam disk and the escapeinent disk and the other of' which engages only the escapement disk, the two members being interengagcd tor movement as` one bythe cani disks and a spring being-applied to the first mentioned pallet member in opposition to the cam disk, and the other ineinber boing individually spring actuated in a like direction.

The combination with adding wheels relatively arraiiged for progressive registrations thereon; ot carrying mechanism coinprising a'cam disk rotatively connected with a limerdenomination wheel, an escapement disk rotativelv connected with a higher denomination iv eel, a Vspring applied-to the latter disk and tensioned by the lower-denomination wheel, and a pallet composed ot relatively movable members one of which the cam disk and the escapcment .disk and the other of which. engages only the cscapenient disk, the two members being interenga ged tor inoven'icnt as one by the cam disksand a spring being applied to the first mentioned pallet member :in opposition to the cam disk and the two members beingspring-connected together.

(l. The combination with adding wheels relatively arranged for progressive regis-A trations thereon; of carrying mechanism comprising a cam disk rotatively connected with a lowerv denomination wheel, an escapeinent disk rotatively connected with a higher denomination wheel, a spring ap plied to the latter disk and tensioned by the lower denomination wheel, and a pallet engaging both disks, a shoulder of the pallet'engaffing a snbltantially radial shoulder of tlie'escapement to normally restrain the latter and another shoulder of the pallet engaging another substantially radial shoulder of said disk to restrain the latter when released from the first shoulder, the second engagement being edge to edge atan acute angle to a radius of the pallet intersecting the second pallet-shoulder, substantially as and 'for the purposes described.

7. Thecoinbination of sector levers, pinions in ineshtherewith respectively, gears having a one-way connection with said pinions respectively, planet' gears rewolnbly connected to said gears respectively, sun gears, registering wheels engaged with the planet gears, escapement 'mechanism controlling the sun gear oi a .higher order regv istering'train and controlled by the nent lower order wheel, locking pawls normally engaging the first mentioned gears to prevent registering rotation thereof and adapt ed to be disengaged therefrom upon actuation ofthe sector levers, ditl'erential means for actuating said levers, and means for locking said gears by-said differential means.

8. The combination of sector levers, pinions in mesh 'therewith respectively, gears having a one-way connection with said pin-- ions respectively, planet gears revolubly connectedlto said gears respectively, sun gears, registering wheels engaged with Athe planet gears, escapement mechanism lcontrolling the s'unI gear of a higher order' registering trainvv and controlled bythe next llower order wheel, locking pawls normally engaging the first mentioned gears to prevent registering rotationth'ereof and adapt-v ed to be disengaged therefrom upon actualtion ofl the sectorlevers, backstop pawls engagingsaid gearsfditlerential means for actuating said levers, and means for obstructing said back-stop pawls' by said diterential means.

9. The'combination of sectorlevers, piir ions in mesh therewith respectively, gears having a one-way connection with said pinions respectively, planetl gears revolubly connected to said gears respectively, sun gears, registering wheels engaged with thel planet gears, escapeinent mechanism eon trolling the sun gear ot' a 'higher order registering train and controlled by the next 'lower order wheel, locking pawls normally engagingthe lirst mentioned gears to pre- 'vent registering rotationthereof and adapted to be disengaged therefrom upon actua-l tion of'the sector levers, back-stop pawls en gaging said gears, a series of depressible keys for each lever to dillerentially vibrate the same, and a movablemember common to said keys and adapted to be operated by any one of the same wheniully depressed, said member having a part adapted, to then engage the back stop pawl of the same order whereby to lock the gear against registering movement.

l0. The combination of sector levers, pinn ions in mesh therewith respectively, gears having a one-way connection with said pins.

ions respectively, planet gears'revOliibly connected to said gears respectively, sun gears, registering Wheels engaged with the planet gears, escapement mechanism controlling the sun gear of a higher order registering train and controlled by the next lower order wheel, locking pawls normallyv engaging the first mentioned gears to prevent registering rotation thereof and adapt-- ed to be disengaged therefrom upon actuation of the sector levers, back-stop pawls engaging said gears, a series of depressible keys for each lever to diterentially vibrate the same, and a movable member common 

